[tiffanyh]

Unless I'm mistaken, this appears to be a custom storage module, not available for sale.

So Apple gets the best of both worlds. They can keep charging their high storage costs, but they themselves gets the flexibility of easily upgrading storage due to having this as a module.

[spacedcowboy]

It’s probably for warranty repair. Means you can walk into an Apple Store with a faulty SSD and walk out 30 mins later with a fixed one.